#include<stdio.h>
int main(void)
{
    int Number1_100[100];
    int i, sum = 0;
    for(i = 0; i < 100; i ++)
    {
        Number1_100[i] = i + 1;
    }
    for(i = 0; i < 100; i ++)
    {
        sum = sum + Number1_100[i];

    }  
    printf("The sum of 1~100 is %d", sum); 
    return 0;
}